420100212 has 24 divisors (see below), whose sum is σ = 1120267456. Its totient is φ = 120028608.

The previous prime is 420100201. The next prime is 420100223. The reversal of 420100212 is 212001024.

It is an interprime number because it is at equal distance from previous prime (420100201) and next prime (420100223).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500513 + ... + 2500680.

Almost surely, 2^420100212 is an apocalyptic number.

420100212 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

420100212 is an abundant number, since it is smaller than the sum of its proper divisors (700167244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420100212 is a wasteful number, since it uses less digits than its factorization.

420100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001207 (or 5001205 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 420100212 is about 20496.3463085497. The cubic root of 420100212 is about 748.9467954837.

Adding to 420100212 its reverse (212001024), we get a palindrome (632101236).

The spelling of 420100212 in words is "four hundred twenty million, one hundred thousand, two hundred twelve".